Please provide your email address to receive an email when new articles are posted on . In March, three societies announced a new universal definition and classification of HF designed to standardize ...

Primary immunodeficiency disorders (PIDs) are a heterogeneous group of disorders characterized, as the name suggests, by deficiencies (abnormal, poor or absent function) in the immune system. As ...

IN much of the academic teaching of biology at the present time, the view is expressed or implied that biological classification is meaningless except as a more or less convenient device for filing ...

There is no agreement on how to classify, define or diagnose hip-related pain—a common cause of hip and groin pain in young and middle-aged active adults. This complicates the work of clinicians and ...